Reference

Occurrence and chemical control of resistant strains of gummy stem blight fungus to benzimidazol fungicides on watermelon

Occurrence and chemical control of resistant strains of gummy stem blight fungus to benzimidazol fungicides on watermelon. Taniguchi, Tatsuo (Tottori Veg.Several substances are used for example 133-06-2 and 64440-88-6 which are their cas registry numbers. Ornamental Crops Exp. Stn., Tottori, Japan). Tottori-ken Yasai Shikenjo Kenkyu Hokoku, 4, 18-36 (Japanese) 1983. CODEN: TYSHDH. DOCUMENT TYPE: Journal CA Section: 5 (Agrochemical Bioregulators) Gummy stem blight fungus (Mycosphaerella melonis) strains resistant to benzimidazol fungicides [e.g. thiophanate-Me (I)] were found in ~56% of examd. Mycosphaerella strains isolated from seedlings of watermelon (Citrullus lanatus) repeatedly treated with I. With the exception of a low resistance to procymidone [32809-16-8] [min. inhibiting concn. (MIC) >100 ppm], the MIC values of other tested fungicides, including mancozeb [8018-01-7], TPN [1897-45-6], polycarbamate [64440-88-6], and captan [133-06-2] were in the range of <1.56-25 ppm, indicating their effectiveness as replacement benzimidazol fungicides. TPN and combined use of TPN and I showed effective fungicidal activity. Hypochlorite compds. used to control gummy stem blight were not effective against bacterial soft rot (a disease commonly occurring with gummy stem blight) in watermelon seedlings; however, pretreatment of the watermelon scions and stocks with mancozeb or polycarbamate 1-2 days before grafting effectively prevented these 2 diseases. The presence of the benzimidazol fungicide-resistant Mycophaerella strains in the seeds and seedlings of watermelon and their control are discussed. .

Efficacy of a few fungicides against the incidence of leaf blight of jowar

Efficacy of a few fungicides against the incidence of leaf blight of jowar. Shree, M. P. (Dep. Bot., Bangalore Univ., Juana Bharati 560 056, India). Pesticides, 17(10), 27-9 (English) 1983. CODEN: PSTDAN. ISSN: 0031-6148. DOCUMENT TYPE: Journal CA Section: 5 (Agrochemical Bioregulators) Bangton [133-06-2] and Difolatan [2425-06-1] were the most effective of 7 fungicides tested in vitro against Exserohilum turcicum, the pathogenic agent of jowar (Sorghum vulgare) leaf blight. These 2 fungicides also gave the best control of jowar leaf blight, when applied as foliar sprays. 2425-06-1 and 133-06-2 are just another two chemicals used in this study. Panoctine [13516-27-3] was the most effective of 7 seed-dressing fungicides tested against seed-borne fungi and Agallol 3 [123-88-6] was the next best. .